Different types
of stems: axis of a plant.Stolon: running stems, which trail above the ground.Tuber: subterranean swellings of plant axes.Volubilate twining: a stem that will wind around objects for
support.Section of a bulb: division of a bulb that allows study of the
interior.Bulb: plant organ that allows for the growth of the plant every
year.Rhizome: stem that annually produces adventitious roots.